The JIT is an advanced JavaScript infovis toolkit based on 5 papers about different information visualization techniques.

The JIT implements advanced features of information visualization like Treemaps (with the slice and dice and squarified methods), an adapted visualization of trees based on the Spacetree, a focus+context technique to plot Hyperbolic Trees, and a radial layout of trees with advanced animations (RGraph).

I came across JIT the other day and it took no time at all really to put a couple of delicious bookmark visualisations together, using Yahoo pipes to slightly preprocess the delicious stuff and prove that integration.